Swap Tab and Escape in all modes including evil

[Igor]

Hello.

'Escape' is too far away on modern keyboards and 'Tab' could be easily 
typed as 'Ctrl+i' in terminal applications and Emacs. So I found it 
convenient to swap them in terminal key bindings and would like to have 
them swapped also in Emacs but not in other GUI applications(so xmodmap 
or xcape is not an option). Is it possible? Or at least is it possible 
to make 'Tab' act as 'Escape'?

I've tried

|`(define-key input-decode-map [tab] [?\e])`|

But this doesn't trigger insert-to-normal transition in evil mode: I am 
pressing 'Tab', I am seeing `|ESC ESC ESC`| in bottom bar, but evil 
state remains |<I>|.||